42202025 has 6 divisors (see below), whose sum is σ = 52330542. Its totient is φ = 33761600.

The previous prime is 42202001. The next prime is 42202123. The reversal of 42202025 is 52020224.

It can be written as a sum of positive squares in 3 ways, for example, as 1993744 + 40208281 = 1412^2 + 6341^2 .

It is not a de Polignac number, because 42202025 - 2⁶ = 42201961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42201994 and 42202012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844016 + ... + 844065.

It is an arithmetic number, because the mean of its divisors is an integer number (8721757).

Almost surely, 2^42202025 is an apocalyptic number.

It is an amenable number.

42202025 is a deficient number, since it is larger than the sum of its proper divisors (10128517).

42202025 is a wasteful number, since it uses less digits than its factorization.

42202025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688091 (or 1688086 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42202025 is about 6496.3085671787. The cubic root of 42202025 is about 348.1591099828.

Adding to 42202025 its reverse (52020224), we get a palindrome (94222249).

The spelling of 42202025 in words is "forty-two million, two hundred two thousand, twenty-five".